Pressure effect on magnetism and superconductivity in
| Autor: | S. Hashimoto, Yoshichika Ōnuki, T. Takeuchi, H. Kohara, Rikio Settai, M. Shiimoto, T. Yasuda |
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| Rok vydání: | 2006 |
| Předmět: |
Superconductivity
Pressure range Materials science Condensed matter physics Electrical resistivity and conductivity Magnetism Antiferromagnetism Electrical and Electronic Engineering Pressure dependence Condensed Matter Physics Thermal expansion Electronic Optical and Magnetic Materials Ambient pressure |
| Zdroj: | Physica B: Condensed Matter. :376-378 |
| ISSN: | 0921-4526 |
| Popis: | Magnetism and superconductivity in the heavy-fermion superconductor CePt 3 Si have been studied under pressure. The antiferromagnetic and superconducting transition temperatures, T N and T sc , respectively, decrease by applying pressure. T N becomes zero around 0.6–0.7 GPa, while the pressure dependence of T sc exhibits a shoulder-like feature around 0.7 GPa, and superconductivity is found to persist in the pressure range up to about 1.5 GPa. A broad peak around 5 K in the temperature derivative of thermal expansion α ( T ) and electrical resistivity d ρ ( T ) / d T at ambient pressure begins to shift to higher temperatures above 0.7 GPa. These results suggest that a critical pressure exists around 0.6–0.7 GPa in CePt 3 Si . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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